The closest potentially habitable planet outside of our solar system is an intimidating 4.2 light-years away, but that hasn't stopped scientists from ... read more
Interstellar travel is a possibility, but is not feasible. Moreover,within our solar system quite a bit of exploration has been done by spacecraft including orbiters and landers. read more
If Kennedy were alive today, he would probably be amazed at the audacity of a new project that is light years more ambitious: DARPA's 100-Year Starship Initiative, which aims to make human space travel beyond our solar system possible within 100 years. read more